Journaled cable-clamp



E. L. CROSBY AND 0. J. MARSHICK.

JOURNALED CABLE CLAMP. APPLICATION HLED OCT. 31, 1919.

1,345,351. Patented July 6, 1920.

:1 M W A j F E L iv-h G B E s I l;

UNITED.

PATENT, OFFICE.

To all whom it may concern:

'Be it known that we, EDWIN L. 01108131". and OLIVER. J. MABSHIGK,citizens of the United States, residing at Detroit, county of Wayne,State of Michigan, have invented certain new and useful Improvements inJournaled Cable-Clamps, and declare the following to be a full, clear,and exact desc ription of the same, such as will enable others skilledin the art to which it appertains tomake anduse the same, referencebeing had tothe accompanying drawings, which form a part of this specication.

' This invention relates to means. for less ening the bending strain onthe flexible cables of a rotatable electric furnace as it moves to andfro about its axis, and has for its object an in iprovedorganization ofparts b means of which the several cables or insu ated wires are held insuitably firm position relatively to their terminal connections on thefurnacerframe, and yet are subjected to such a gentle curving or bendingstrain, even when the furnace drum 1 is at the extreme 'of itsswmgm ether (11- rection, that no damage to) ,the 'feedwire results.-

In' the drawings: 7 p v Figure 1 is a perspective, showing the wiresleading out from-the furnace mechaeat a curvature as they nism at aboutas are ordinarily like y to besubf'ected to. p

Fig. 2 is an end elevationa view.) Fig. 3 is an enlarged sectionalviewrof the guide roller, showing the engagement of a cabletherethrough.

A represents a rotatable furnace drum, from each end of which projectsan. electrode-handling frame B, on which feed cables C are connectedwith the electrode which engages in the bearing D, vWere these cablesallowed to extend out loosely toward'their wall or" dynamo connections,ever time the furnace rocked, the cables won d be drawntighter resultingin sharply bending each one of them at its point of connection with theelectrode block, and thus causing a breaking of the wiresooner "orlater. We have found. it necessary to not only locate the point bfbending of the.

cables at an appreciable distance from their points of connection withthe electrode block, but even at that distance to provide an element ofgreater cushioning qualities than a wire or thin bar for the cables towith, an

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Patented July6,1920.

Application filed October :1, me. Serial n... 334,719.v Y

bend around, this member also serving as a clamp. e We therefore journalin brackets E a roller F, through which extend, a series of suitablyspaced holes G- (or if desired, a single lengthwise slot), through whichthe indi vidual wires or cables pass, the edges orends of each holebeing enlarged or sloped away as at J, so that the curve" of a cablethereover, particularly with reference .to its relatively remoteconnections at either end, which are purposely left somewhat loose,

is relatively gentle, even when the furnace drum is at the extreme ofits swing. In Fig; 3 we have, for the sake of clea'rness ofillustration, shown the1cable "C as slightly spaced from the sides ofthehole or slot but when the a. paratusj is fully ready for usethe parts 0.theroller-F- serve as fa clamp about the cables, to prevent the slackon either side from being drawn tight and thus straining theconnections. I The roller F, being journaled -in 'the frame B, turnsabout its axis more or less as the drum ro- I tates, but this, plus theeasy curvature of the cables as regards their terminal connections andtheir tenure against slippage, causesthe bending of the cables about sovlarge an are that the breaking strain on them is reducedto a minimum.

What we claim is: y 1. In combination with a rockable frame, a pluralityof current'wires connected therea transversely apertured roller memberthrough which said wires lead and by means of which theangular strain onthe oints of connection of said wires with said rameis lessened when therocking of the frame takesf place.-

2. In combination with the electrode frame of a rotatable refractoryfurnace, an apertured roller member journaled therein substantiallyparallel to the'axis of rotation thereof, and a plurality of. cablesleading from an external point thr ugh the apertures in said rollermember to connection with said electrode frame, beingv so' positioned bytheir engagement with said roller that the strain. on their severalpoints of connection duevto the rotative movement of 105 .said frame isrendered negligible.

"3. The combination,with a rocking'frame of a transversely aperturedroller journale therein in parallel relation to the axis of rotationthereof,

he apertured portion of '110 said roller-being adapted to guide througha path of relatively gentle curvature the several feed cables leadingfrom an external point to connection with said frame.

4. The combination of a rotatable electrode frame, a plurality of feedcables connected therewith, anda guide roller over which said cablesextend, adapted to modify the angularity of said cables to their pointsof connection with the frame when the frame is turned from its normalposition.

5. In' combination with an electrode frame, a plurality of current wirescon-- nected therewith, and a transversely apertured roller journaled insaid frame, through which said cables pass and by which the cables areheld against slippage and cushioned against undue bending strain.

6. In combination with the electrode frame of a rotatable electricfurnace, an electrode carriage member movably supported therein inposition to be actuated toward or away from the furnace drum, currentcables connected with said carriage member, and a cable-engaging memberjournaled in said frame "in position to turn as the furnace swings,thereby cushioning the bending strain upon said cables.

In testimony whereof we sign this specification in the presence of twoWitnesses.

EDWIN L. CROSBY. OLIVER J. MARSHICK.

Witnesses:

NVILLIAM M. SWAN, .JEFrERsoN G. THURBER.

